If your application server allowed JNI, then an error in the JNI access could bring down the entire application server!
如果应用服务器支持JNI，那么JNI访问中的一个错误都会使整个应用服务器停止运行！
If you declare your properties private and attempt to access them from outside the class 'scope (as shown in Listing 7), the PHP engine will throw a fatal error.
如果将属性声明为private并试图从类范围外部访问它(如清单7所示)，PHP引擎将抛出致命错误。
Your write system call will be interrupted by the bus error signal SIGBUS, because you performed a bad memory access.
此时write系统调用会被进程接收到的SIGBUS信号中断，因为当前进程访问了非法内存地址。
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